| Sammamish to Popovo | 5,862.13 mi (9,434.19 km) |
| Sammamish to Provadia | 5,894.04 mi (9,485.55 km) |
| Sammamish to Radnevo | 5,924.46 mi (9,534.50 km) |
| Sammamish to Radomir | 5,851.60 mi (9,417.24 km) |
| Sammamish to Rakitovo | 5,909.95 mi (9,511.14 km) |
| Sammamish to Rakovski | 5,907.23 mi (9,506.77 km) |
| Sammamish to Razgrad | 5,855.33 mi (9,423.25 km) |
| Sammamish to Razlog | 5,904.30 mi (9,502.05 km) |
| Sammamish to Ruse | 5,826.61 mi (9,377.02 km) |
| Sammamish to Samokov | 5,877.07 mi (9,458.23 km) |
| Sammamish to Sandanski | 5,920.76 mi (9,528.54 km) |
| Sammamish to Sevlievo | 5,862.63 mi (9,434.99 km) |
| Sammamish to Shumen | 5,878.85 mi (9,461.09 km) |
| Sammamish to Silistra | 5,830.50 mi (9,383.28 km) |
| Sammamish to Sliven | 5,906.99 mi (9,506.38 km) |
